Geomorphological study of unstable rock slope deformation on Stáluvárri, Kåfjorden, Troms
Unstable rock slope failures are catastrophic hazards with a long history in Norway. A large portion of these have been detected within Troms County, with a high percentage of them the Lyngenfjorden fault zone. Stáluvárri, a mountain in Kåfjord commune, is such a slope with detected bodies undergoin...
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UiT Norges arktiske universitet
2024
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ftunivtroemsoe:oai:munin.uit.no:10037/34107 2024-09-15T18:15:45+00:00 Geomorphological study of unstable rock slope deformation on Stáluvárri, Kåfjorden, Troms Nypan, Iver Magnarson 2024-05-15 https://hdl.handle.net/10037/34107 eng eng UiT Norges arktiske universitet UiT The Arctic University of Norway https://hdl.handle.net/10037/34107 Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) Copyright 2024 The Author(s) https://creativecommons.org/licenses/by-nc-sa/4.0 Landslides GEO-3900 Mastergradsoppgave Master thesis 2024 ftunivtroemsoe 2024-07-09T23:41:41Z Unstable rock slope failures are catastrophic hazards with a long history in Norway. A large portion of these have been detected within Troms County, with a high percentage of them the Lyngenfjorden fault zone. Stáluvárri, a mountain in Kåfjord commune, is such a slope with detected bodies undergoing slow displacement rates. Bedrock compositions on the slope has abundant mica schists, with a thrust faults emplacing more gneissic compositions on top. As part of a nationwide task by NGU, this study will focus on identifying some of the geomorphological signs on the slope, assess potential controlling mechanisms and address the hazard it poses. The field is complex with generally different scenes happening, and four scenarios has been identified on the slope related to deformational processes where one of them stand out as the bigger hazard. Stáluvárri can be seen influenced by normal faulting from post-Caledonian extension and rifting. Two larger fault systems can be seen in NW-SE and NE-SW fashion and is directly controlling the related rear rupture surfaces of the displaced material. Because of the sheer size of the slope, with inherited large fault systems controlling larger sections of the slope, it has been classified as being controlled deep-seated gravitational slope deformation, a landslide case which has slow displacement rates associated with it. Master Thesis Kåfjord Troms University of Tromsø: Munin Open Research Archive |
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Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
Landslides GEO-3900 |
spellingShingle |
Landslides GEO-3900 Nypan, Iver Magnarson Geomorphological study of unstable rock slope deformation on Stáluvárri, Kåfjorden, Troms |
topic_facet |
Landslides GEO-3900 |
description |
Unstable rock slope failures are catastrophic hazards with a long history in Norway. A large portion of these have been detected within Troms County, with a high percentage of them the Lyngenfjorden fault zone. Stáluvárri, a mountain in Kåfjord commune, is such a slope with detected bodies undergoing slow displacement rates. Bedrock compositions on the slope has abundant mica schists, with a thrust faults emplacing more gneissic compositions on top. As part of a nationwide task by NGU, this study will focus on identifying some of the geomorphological signs on the slope, assess potential controlling mechanisms and address the hazard it poses. The field is complex with generally different scenes happening, and four scenarios has been identified on the slope related to deformational processes where one of them stand out as the bigger hazard. Stáluvárri can be seen influenced by normal faulting from post-Caledonian extension and rifting. Two larger fault systems can be seen in NW-SE and NE-SW fashion and is directly controlling the related rear rupture surfaces of the displaced material. Because of the sheer size of the slope, with inherited large fault systems controlling larger sections of the slope, it has been classified as being controlled deep-seated gravitational slope deformation, a landslide case which has slow displacement rates associated with it. |
format |
Master Thesis |
author |
Nypan, Iver Magnarson |
author_facet |
Nypan, Iver Magnarson |
author_sort |
Nypan, Iver Magnarson |
title |
Geomorphological study of unstable rock slope deformation on Stáluvárri, Kåfjorden, Troms |
title_short |
Geomorphological study of unstable rock slope deformation on Stáluvárri, Kåfjorden, Troms |
title_full |
Geomorphological study of unstable rock slope deformation on Stáluvárri, Kåfjorden, Troms |
title_fullStr |
Geomorphological study of unstable rock slope deformation on Stáluvárri, Kåfjorden, Troms |
title_full_unstemmed |
Geomorphological study of unstable rock slope deformation on Stáluvárri, Kåfjorden, Troms |
title_sort |
geomorphological study of unstable rock slope deformation on stáluvárri, kåfjorden, troms |
publisher |
UiT Norges arktiske universitet |
publishDate |
2024 |
url |
https://hdl.handle.net/10037/34107 |
genre |
Kåfjord Troms |
genre_facet |
Kåfjord Troms |
op_relation |
https://hdl.handle.net/10037/34107 |
op_rights |
Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) Copyright 2024 The Author(s) https://creativecommons.org/licenses/by-nc-sa/4.0 |
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1810453698923462656 |